The base of a solid is the region enclosed by the graphs of y = e^x, y = 0, x = 0, and x = 1. If each cross-section perpendicular to the x-axis is an equilateral triangle, then the volume is: (A) (rad(3)/8)(e^2- 1)
(B) (rad(3)/4)(e^2-1)
(C)(rad(3)/2)(e^2– 1)

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.